998*1996+1997*11+1985/1997*1996-1995*1996
Những câu hỏi liên quan
1988×1996+1997×11+1985/1997×1996-1995×1996
9979.006009
are you going to kill us?
1998×1996+1997×11+1985
1997×1996-1995×1996=?
1998 x 1996 + 1997 x 11 + 1985 : 1997 x 1996 - 1995 x 1996
1998nhan 1996 + 1997 nhan 11 + 1985 / 1997 nhan 1996 - 1995 nhan 1996
1998*1996+1997*11+1985
1997*1996-1995*1996
1998 x 1996 + 1997 x 11 + 1985
= 3988008 + 21967 + 1985
= 4009975 + 1985
= 4011960
b. 1997 x 1996 - 1995 x 1996
= 1996 x (1997 - 1995)
= 1996 x 2
= 3992
Đúng 0
Bình luận (0)
Tính nhanh biểu thức sau:
A= 1998*1996+1997*11+1985/1997*1996-1995*1996
Tính nhanh :
1998 . 1996 + 1997 . 11 + 1985
----------------------------------------------
1997 .1996 - 1995 . 1996
Ta có : ( 1998 * 1996 + 1997 * 11 + 1985 ) / ( 1997 * 1996 - 1995 * 1996 ) .
= ( 1998 * 1997 - 1998 + 1997 * 11 + 1985 ) / 1996 * ( 1997 - 1995 ) .
= [ 1997 * ( 1998 + 11 ) - 1998 + 1985 ] / 1996 * 2 .
= [ 1997 * 2009 - 13 ] / 1996 * 2 .
= [ 1996 * 2009 + 2009 - 13 ] / 1996 * 2 .
= [ 1996 * 2009 + 1996 ] / 1996 * 2 .
= [ 1996 * ( 2009 + 1 ) / 1996 * 2 .
= 1996 * 2010 / 1996 * 2 .
= 1005 .
Đúng 1
Bình luận (0)
1998*996+1997*11+1985/1997*1996-1995*1996
1998 x 1996 + 1997 x 11 + 1985/1997 x 1996 - 1995 x1996
